Valve mechanism for internal-combustion engines



June 12,1923. w

- A. Y. EDWARDS VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES 2 Sheets-Sheet 1 Or g Filed Feb. '7, 1918 wuvwooao June 12, 1923. 1,458,223

A..Y. EDWARDS VALVE MECHANISM FOR INTERNAL COMBUSTION ENGINES Or ginal Filed Feb. 7. 1918 2 Sheets-Sheet 2 .0 Wm mwia Patented June 12, 1323. i

nit-ten stars ALBERT Y. EDVARIDS, OF SPRINGFIELD, OHIO VALVE 'MECHANISM FOB/ INTERNAL-COMBUSTION ENGINES.

Original application filed February 7,

To all whom it may concern Be it-known that I, ALBERT Y. EDWABns,

a citizen of the Unitedv States, residingat Springfield, in the county of ,Clark and State of Ohio, have invented certain new and useful Improvements in Valve Mechanism for Internal-Combustion Engines, of which the following is a specification.

My invention. relates to improvements in in valve mechanism for internal combustion engines, it more particularly relating to engines of ,the stationary horizontal type; this application being a division of'my application. .Ser. No. 215,792 filed February 7 1918. n An object ofmy invention is toprovi-de a. valve mechanismqfor engines of the type referred to so arranged as to obviate the necessity of introducing any part thereof into theprank case or, the cover for the crankcase so as to leave the cover at the case unencumbered to permit'ready accessibility to the working parts in the crank case. A

A further object of my invention is to provide a valve mechanism which will be simple in construction and effective in its operation.

In the accompanying drawings Fig. 1 is a side elevation of an engine embodying my improvements with a portion of the same broken away and shown in section; the section part being on the line 11 of Fig. 2.

Fig. 2 is an end veiw with the cover plate of the cylinder head extension removed.

Fig. 3 is a top plan view of some of the operating partswith the cover for the gear housing removed.

Fig. 4 is a section on the line 1- of Fig. 5 is a side elevation of a portion of the valve operating mechanism.

Referring to the drawings, 1 represents 4 the base, 2 the crankcase proper, 3 and 4; two horizontally arranged cylinders, 55 a water reservoir communicating with the Water jacket 6, 7 a gear housing and 9 a removable cover for the crank case, this cover being fitted to the crank case in the manner explained in my prior application referred to, the crank shaft 13, having a fly wheel 13 and is journaled in suitable bearings in the casing.

Secured to the surface 2 of the crank 191s, seriaino. 2 5,792., Divided a this application an April 19, leao serial n 3%,818; a i

case 2 isa bracket '21. p The has I a stud 28 on which is j ournaled a, gear 2.9 which is driven froin'thegear' 30 on the crank shaft. Rotatabl'y connected with the gear 29 are two cams 3,1 and 32, the cams being locked in a certain relation toelaoh other as well'ascon nected to the gearby the pin 33. Cooperating with thecam 31 1s a cam roller 34,011 astud 35 fixed in a finger 36 whichis journaled on a stud 37 fixed in the bracket 21, the fingerhaving connected therewith acrank arm 38Qwhich is pivotally connectedto a rod 39. Also cooperating with the cam v.31 is a roller 40 upon-a studll fixed in affin ger 42 which is journaled on a stud 43 also". fixed in the gear bracket 21 and having integrally connected therewith a 1 crank arm 44L pivotal'ly connected to the rod 4L5. Cooperating with the cam 32 is a cam roller 46' on a studs? fixed in theffinger 4:8, ournaled 'on the stud .37 and l o integrally connected with, the crank'arm 38. Also cooperating with the said cam 32 is a cam roller a9 journaled, on thestud 50ffixe d 'inlthe finger .51 which is also journaled on the stud 43 andintegrally connected with the crank arm 44.

In the present construction the cam roller of each pair or" cam fingers are set ninety degrees apart, the two cranks of the crank shaft are arranged 180 degrees apart, and the ratio of gearing between the crank shaft and the cam is two to one, the cams revolving one half as fast as the crank shaft.

The conformation and disposition of the cams is such that the rod 39 will be moved in one direction to open the inlet valve and in the opposite direction to open the exhaust valve of one of the cylinders while the rod 45 will be moved in one direction to open the inlet valve and in the opposite direction to open the exhaust valve of the other cylinder. The rod 39 is connected to an arm 52 integral with a sleeve or hub 53 journaled loosely on the shaft 54: which extends transversely across the heads of the cylinders 3 and 4:, being journaled in bearings 55 and 56. The hub 53 has connected therewith rocker arms 57 and 58 which carry adjustable valve tappets 57 and 58 which are arranged in line with the valve stems 59 and 60 of the valves of the cylinder 4. The rod 45 is connected with an arm 61 on a hub 62 which is connected to the shaft 54. The shaft also has connected to its other end a hub whichfhas integrallyformed-arms 64 and 65 carrying adjustable valve tappets v64: and 65 arranged in line with the 'valvetappets, as well as the bearings for the shaft,- are located in a cylinder head exten I v valves of some of the cylinders, where aplu valve stems (not shown): of cylinder '3.

The shaft 54, its rocker arms and, the

sion 66 which is connected to the -main head 67 of the cylinderand has an inlet passage" way 68 forthefuel communicating with a passageway 69" in the main head; this head extension'being closed" by acover 70. 'i

' By the construction of valve mechanism described, I am enabled to arrange the usual transverse shaft required to operate the ralitylof' cylinders are employed, at those ends'of the cylinders opposite the crank case,

" thus eliminating the necessity of extending snch transverse shaft with its accompanying operating "partsithrough the crank case, or

' through the, cover, which. arrangement V would interferefwith the construction described WherebyI obtain an unencumbered sity: fol-springs toyreturn the valve operating devices the devices being operated I positively in bothdirection's by the cams.

fibe f cy i ders, a flywheel he on Having thus described m invention, I

1'. -I 'a gas engine, the combination of a line extendingbetween the cylinders, a crank shaft and casing located at one end of said cylinders, valves at the opposite end of said cylinders, Valve connections, a cam shaftcasing detachablysecured to the crank casing atone side thereof, and a cam for operating the valveconnections within said 1 cam shaft casing.

1 '2. In a gas engine, the combinationof a pair of cylinders, a fly wheellocated on a line extending between the cylinders, -'a

crank shaft and casing centrally-located" a bracketed support at one side of the crank casing, a cam shaft and operatingparts on said support, valves for the cylinders,and

valveconnecting rods extending: along onev side of one cylinder to the cam shaft 'oper ating parts."

3. In a gas engine,

ap'air of cylinders, a v

crank shaft and"'crank casing centrally 1ocated, an Wheel on said shaft located on a line extending between the cylinders, a supplemental casingat one side of said central casing,'a cam shaft 'withlcams' supported in said latter casing, crank arms associated with said cams also supported within said casing, valve mechanism for the cylinders, and ivalve connecting rodsoperated by said crankarins. i

In testimony whereof, 'I have hereuntdset my hand of Afpril, 1920; v

ALBERT EDWARDS;

'Witness:

Cms. I. 

